128270633 has 4 divisors (see below), whose sum is σ = 128482560. Its totient is φ = 128058708.

The previous prime is 128270603. The next prime is 128270647. The reversal of 128270633 is 336072821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128270633 - 2²⁶ = 61161769 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 128270633.

It is not an unprimeable number, because it can be changed into a prime (128270603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105053 + ... + 106266.

It is an arithmetic number, because the mean of its divisors is an integer number (32120640).

Almost surely, 2^128270633 is an apocalyptic number.

It is an amenable number.

128270633 is a deficient number, since it is larger than the sum of its proper divisors (211927).

128270633 is an equidigital number, since it uses as much as digits as its factorization.

128270633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211926.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 128270633 is about 11325.6625854738. The cubic root of 128270633 is about 504.3233534834.

The spelling of 128270633 in words is "one hundred twenty-eight million, two hundred seventy thousand, six hundred thirty-three".